Vaporization core, vaporizer, and electronic vaporization device

ABSTRACT

A vaporization core applied to an electronic vaporization device includes: a porous substrate having a liquid guide part that has a liquid absorbing surface for absorbing a liquid substrate and a vaporization surface on which a heating element is disposed, the liquid guide part conducting the liquid substrate on a side of the liquid absorbing surface to the vaporization surface; the heating element; and a vent part connected to the liquid guide part, the vent part having a hydrophobic ventilation characteristic, the vent part having an air inlet surface and an air outlet surface, the air inlet surface being for contacting gas, the air outlet surface being exposed to a liquid storage cavity, and the vent part being for conducting gas on a side of the air inlet surface to the air outlet surface.

CROSS-REFERENCE TO PRIOR APPLICATION

This application is a continuation of International Patent Application No. PCT/CN2020/117195, filed on Sep. 23, 2020. The entire disclosure is hereby incorporated by reference herein.

FIELD

This application relates to the field of electronic vaporization technologies, and in particular, to a vaporization core, a vaporizer, and an electronic vaporization device.

BACKGROUND

In the related art, an electronic vaporization device mainly includes a vaporizer and a body component. The vaporizer generally includes a liquid storage cavity and a vaporization component, where the liquid storage cavity is configured to store a vaporizable medium, and the vaporization component is configured to heat and vaporize the vaporizable medium, to form vapor for an inhaler to inhale. The body component is configured to supply power to the vaporizer.

When the vaporizer vaporizes the vaporizable medium, the vaporizable medium is consumed at a fast speed, and an air pressure of the liquid storage cavity is reduced, which results in poor liquid supply to the vaporization assembly, so that the vaporizable medium fails to be quickly replenished to the vaporization assembly. As a result, the vaporization assembly dry burns and is overheated, resulting in damage to the vaporization assembly due to the poor liquid supply, a burnt smell, and harmful substances.

SUMMARY

In an embodiment, the present invention provides a vaporization core applied to an electronic vaporization device, comprising: a porous substrate comprising a liquid guide part that has a liquid absorbing surface configured to absorb a liquid substrate and a vaporization surface on which a heating element is disposed, the liquid guide part being configured to conduct the liquid substrate on a side of the liquid absorbing surface to the vaporization surface; the heating element; and a vent part connected to the liquid guide part, the vent part having a hydrophobic ventilation characteristic, the vent part comprising an air inlet surface and an air outlet surface, the air inlet surface being configured to contact gas, the air outlet surface being configured to be exposed to a liquid storage cavity, and the vent part being configured to conduct gas on a side of the air inlet surface to the air outlet surface.

BRIEF DESCRIPTION OF THE DRAWINGS

Subject matter of the present disclosure will be described in even greater detail below based on the exemplary figures. All features described and/or illustrated herein can be used alone or combined in different combinations. The features and advantages of various embodiments will become apparent by reading the following detailed description with reference to the attached drawings, which illustrate the following:

FIG. 1 is a schematic structural diagram of an electronic vaporization device according to this application;

FIG. 2 is a schematic structural diagram of a vaporizer in the electronic vaporization device shown in FIG. 1 ;

FIG. 3 is a schematic structural diagram of a cross-sectional view of the vaporizer shown in FIG. 2 in a BB direction;

FIG. 4 is a schematic exploded structural view of the vaporizer shown in FIG. 2 ;

FIG. 5 is a schematic diagram of a partially enlarged structure of the vaporizer shown in FIG. 3 ;

FIG. 6 is a schematic structural diagram of a cross-sectional view of a base in the vaporizer shown in FIG. 5 in another direction;

FIG. 7 is a schematic structural diagram of a first cross-sectional view of a porous substrate in the vaporizer shown in FIG. 2 ;

FIG. 8 is a schematic structural diagram of a second cross-sectional view of a porous substrate in FIG. 2 ;

FIG. 9 is a schematic structural diagram of a third cross-sectional view of a porous substrate in FIG. 2 ;

FIG. 10 is a schematic structural diagram of a fourth cross-sectional view of a porous substrate in FIG. 2 ;

FIG. 11 is a schematic structural diagram of a fifth cross-sectional view of a porous substrate in FIG. 2 ;

FIG. 12 is a schematic structural diagram of a sixth cross-sectional view of a porous substrate in FIG. 2 ;

FIG. 13 is a schematic structural diagram of a seventh cross-sectional view of a porous substrate in FIG. 2 ;

FIG. 14 is a schematic structural diagram of an eighth cross-sectional view of a porous substrate in FIG. 2 ;

FIG. 15 is a schematic structural diagram of a top view of a porous substrate in FIG. 7 or FIG. 14 ;

FIG. 16 is a schematic structural diagram of another top view of a porous substrate in FIG. 7 ;

FIG. 17 is a schematic structural diagram of a side view of a porous substrate in FIG. 8 or FIG. 10 ;

FIG. 18 is a schematic structural diagram of a top view of a porous substrate in FIG. 9 ;

FIG. 19 is a schematic structural diagram of another top view of a porous substrate in FIG. 9 ;

FIG. 20 is a schematic structural diagram of a cross-sectional view of a porous substrate in FIG. 5 ; and

FIG. 21 is a schematic structural diagram of a cross-sectional view of the electronic vaporization device shown in FIG. 1 in an AA direction.

DETAILED DESCRIPTION

In an embodiment, the present invention provides a vaporization core, a vaporizer, and an electronic vaporization device, so as to resolve the problem that liquid supply by the electronic vaporization device is not smooth.

In an embodiment, the present invention provides a vaporization core applied to an electronic vaporization device. The vaporization core includes a porous substrate and a heating element; and the porous substrate includes: a liquid guide part that has a liquid absorbing surface for absorbing a liquid substrate and a vaporization surface on which the heating element is disposed, where the liquid guide part is configured to conduct a liquid substrate on the side of the liquid absorbing surface to the vaporization surface; and a vent part connected to the liquid guide part, where the vent part has a hydrophobic ventilation characteristic, the vent part includes an air inlet surface and an air outlet surface, the air inlet surface is configured to contact gas, the air outlet surface is configured to be exposed to a liquid storage cavity, and the vent part is configured to conduct gas on the side of the air inlet surface to the air outlet surface.

In an embodiment, the present invention provides a vaporizer. The vaporizer includes the foregoing vaporization core. A liquid storage cavity and a vaporization cavity are formed in the vaporizer, a liquid absorbing surface and an air outlet surface are exposed to a liquid substrate in communication with the liquid storage cavity, a vaporization surface is exposed to the vaporization cavity, and an air inlet surface is exposed to gas in communication with the vaporization cavity.

In an embodiment, the present invention provides an electronic vaporization device. The electronic vaporization device includes a power supply component and the foregoing vaporizer, where the power supply component is electrically connected to the vaporizer, and is configured to supply power to the vaporization core of the vaporizer.

Beneficial effects of this application are as follows: Different from the prior art, this application discloses a vaporization core, a vaporizer, and an electronic vaporization device. By defining that the porous substrate of the vaporization core includes the liquid guide part and the vent part, where the vent part has a hydrophobic ventilation characteristic, so that when the liquid guide part guides the liquid in the liquid storage cavity from the liquid absorbing surface to the vaporization surface, the external gas may be guided to the liquid storage cavity by using the vent part, so as to resolve the problem that liquid discharge is not smooth because air pressure in the liquid storage cavity is too low when the vaporization core guides the liquid, thereby facilitating a return rise of the air pressure in the liquid storage cavity and enabling the liquid to be smoothly guided to the vaporization surface from the liquid absorbing surface. Therefore, the vaporization core provided in this application can supply air to the liquid storage cavity on the side of the liquid absorbing surface, thereby improving an air pressure condition of the liquid storage cavity, so as to avoid the case that liquid discharge is not smooth due to a low air pressure in the liquid storage cavity.

The technical solutions in embodiments of this application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of this application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the protection scope of this application.

Embodiment mentioned in the specification means that particular features, structures, or characteristics described with reference to the embodiment may be included in at least one embodiment of this application. The term appearing at different positions of this specification may not refer to the same embodiment or an independent or alternative embodiment that is mutually exclusive with another embodiment. A person skilled in the art explicitly or implicitly understands that the embodiments described in the specification may be combined with other embodiments.

This application provides an electronic vaporization device 300. Referring to FIG. 1 to FIG. 4 , FIG. 1 is a schematic structural diagram of an embodiment of an electronic vaporization device according to this application. FIG. 2 is a schematic structural diagram of an embodiment of a vaporizer in the electronic vaporization device shown in FIG. 1 . FIG. 3 is a schematic structural diagram of a cross-sectional view of the vaporizer shown in FIG. 2 in a BB direction. FIG. 4 is a schematic exploded structural view of the vaporizer shown in FIG. 2 .

As shown in FIG. 1 , the electronic vaporization device 300 may be configured to vaporize an e-liquid. As shown in FIG. 1 , the electronic vaporization device 300 includes a vaporizer 100 and a power supply component 200 that are connected to each other. The vaporizer 100 is configured to store a liquid and vaporize the liquid to form vapor that can be inhaled by a user. The liquid may be a liquid substrate such as an e-liquid or a drug liquid. The power supply component 200 is configured to supply power to the vaporizer 100, so that the vaporizer 100 can vaporize the liquid substrate to form vapor.

As shown in FIG. 2 to FIG. 4 , the vaporizer 100 may include a cartridge tube 10, a base 20, a vaporization core 30, and a bottom 40, where the vaporization core 30 is disposed between the base 20 and the bottom 30, and the base 20, the vaporization core 30, and the bottom 40 are housed in the cartridge tube 10.

In this embodiment, a liquid storage cavity 12 and a vapor passage 14 are disposed in the cartridge tube 10, a liquid outlet port 16 is formed at one end of the cartridge tube 10, and the liquid outlet port 16 communicates with the liquid storage cavity 12. The liquid storage cavity 12 is configured to store an e-liquid, and the vapor passage 14 is configured to send converted vapor from the vapor passage 14.

With reference to FIG. 2 to FIG. 5 , the base 20 is embedded in the cartridge tube 10 to cover the liquid outlet port 16. The base 20 may include a guide part 22 and an accommodating part 26 successively connected. A liquid inlet hole 222 and an air outlet hole 224 are disposed on the guide part 22, the liquid storage cavity 12 is in fluid communication with the liquid inlet hole 222, and the vapor passage 14 is in fluid communication with the air outlet hole 224. An accommodating cavity 262 for accommodating a part of the vaporization core 30 is formed in the accommodating part 26, and the vaporization core 30 is partially accommodated in the accommodating cavity 262. The accommodating part 26 communicates with the guide part 22 and cooperates with a first surface 321 of the vaporization core 30, so that the liquid inlet hole 222 is in fluid communication with the vaporization core 30, so that the e-liquid in the liquid inlet hole 222 can be delivered to the vaporization core 30 by using the guide part 22. The vaporization core 30 is configured to convert the delivered e-liquid into vapor by means of heating. The air outlet hole 224 is in fluid communication with the vaporization core 30, and is configured to transfer the converted vapor from the air outlet hole 224 to the vapor passage 14. The vapor is directed to the user's mouth through the vapor passage 14.

In this embodiment, the liquid inlet hole 222 and the air outlet hole 224 are disposed on an end face of the base 20 near the liquid storage cavity 12.

The liquid inlet hole 222 communicates opposite two end surfaces of the guide part 22, so that the e-liquid in the liquid storage cavity 12 flows into the vaporization core 30 through the liquid inlet hole 222. The air outlet hole 224 communicates the end face of the guide part 22 with the side surface thereof, and the vaporized vapor flows into the side surface of the guide part 22 with air flow, and further flows out through the air outlet hole 224 and the vapor passage 14.

In this embodiment, the base 20 having the liquid inlet hole 222 and the air outlet hole 224 is formed as an integrated structure, and the liquid inlet hole 222 and the air outlet hole 224 are simultaneously formed on the guide part 22, thereby further improving utilization of the guide part 22, and making the structure of the vaporizer 100 more compact.

There may be only one liquid inlet hole 222 and one air outlet hole 224, or there may be one liquid inlet hole 222 and a plurality of air outlet holes 224, a plurality of liquid inlet holes 222 and one air outlet hole 224, or there are a plurality of liquid inlet holes 222 and air outlet holes 224 at the same time. In this application, the quantities of liquid inlet holes 222 and air outlet holes 224 are not specifically limited.

The cross-sectional shape of the liquid inlet hole 222 is a non-circular hole. Specifically, the cross-sectional shape of the liquid inlet hole 222 may be a regular shape such as an ellipse, a rectangle, or a triangle, or may be an irregular shape such as a quadrilateral or a pentagon, which is not listed one by one herein.

An advantage of setting the shape of the liquid inlet hole 222 to a non-circular hole is that the non-circular hole can prevent a liquid film from being generated when the e-liquid enters the liquid inlet hole 222, so as to ensure fluency of conveying the e-liquid, and avoid a phenomenon of dry burning or a decrease in a vapor amount during continuous suction. The liquid film means that when the e-liquid flows into the liquid inlet hole 222, a bubble film is formed at the opening of the liquid inlet hole 222, and blocks the liquid inlet hole 222.

As shown in FIG. 6 , the internal surface of the air outlet hole 224 is disposed to include an arc-shaped surface, so as to increase a stay time of vapor in the air outlet hole 224, thereby effectively reducing the temperature of converted vapor, and preventing an excessive temperature when the vapor flows out of the air outlet hole 224 and the vapor passage 14, thereby causing burns.

As shown in FIG. 3 and FIG. 5 , in this embodiment, the accommodating part 26 includes a lower surface 261 and a through hole 263. The lower surface 261 cooperates with the first surface 321 of the vaporization core 30, and the through hole 263 is connected to the liquid inlet hole 222 on the guide part 22. The quantity of through holes 263 may be the same as the quantity of liquid inlet holes 222 on the guide part 22, that is, a through hole 263 is correspondingly disposed on the accommodating part 26 at a position of each liquid inlet hole 222, so that the liquid inlet hole 222 is connected to the vaporization core 30, and the e-liquid can reach the vaporization core 30 by using the liquid inlet hole 222. Alternatively, the accommodating part 26 is provided with only one through hole 263, and all the liquid inlet holes 222 are connected to the through hole 263. This is not specifically limited in this application.

The accommodating part 26 is configured to partially accommodate the vaporization core 30. Specifically, in this embodiment, the accommodating part 26 is connected to the guide part 22, the vaporization core 30 is partially accommodated in the accommodating cavity 262 of the accommodating part 26, and the first surface 321 of the vaporization core 30 abuts against the lower surface 261 of the accommodating part 26 by using a sealing member 28, so that the accommodating part 26 is sealed with the vaporization core 30, that is, the base 20 is sealed with the vaporization core 30.

The base 20 is a component formed integrally, and a quantity of components of the vaporizer 100 can be reduced, so that installation is more convenient and related sealing performance is better.

In this embodiment, the vaporization core 30 may include a porous substrate 32 and a heating element 34 disposed on the porous substrate 32. The heating element 34 is configured to vaporize an e-liquid derived from the porous substrate 32.

Referring to FIG. 3 to FIG. 5 , the sealing member 28 is disposed between the base 20 and the porous substrate 32, and is disposed on the first surface 321 and the side surface 324 of the porous substrate 32. In this embodiment, the sealing member 28 has an upper wall 282 that cooperates with the first surface 321 of the porous substrate 32 and a sidewall 284 that cooperates with the side surface 324 of the porous substrate 32, so as to seal the gap between the base 20 and the porous substrate 32, and implement sealing cooperation between the base 20 and the vaporization core 30, so as to prevent the e-liquid from leaking in the process of flowing from the base 20 to the porous substrate 32.

The upper wall 282 of the sealing member 28 is located between the lower surface 261 and the porous substrate 32, and an avoidance hole 286 corresponding to the porous substrate 32 is disposed on the upper wall 282, so that the avoidance hole 286 communicates with the through hole 263. The side wall 284 of the sealing member 28 is sandwiched between the inner wall of the accommodating cavity 262 and the porous substrate 32. Specifically, the sealing member 28 is sleeved on the porous substrate 32, and is sandwiched between the porous substrate 32 and the inner wall of the accommodating cavity 262. An advantage of this arrangement is that, on the one hand, the porous substrate 32 can be positioned, and on the other hand, the e-liquid on the side of the porous substrate 32 can be prevented from leaking out of the side surface 324 of the porous substrate 32, thereby causing waste.

The vaporization core 100 further includes a sealing cover 29, and the sealing cover 29 covers the guide part 22, and is located between the guide part 22 and the inner wall of the liquid storage cavity 12, so as to seal the gap between the base 20 and the cartridge tube 10, so as to avoid leakage.

The sealing cover 29 is provided with a through hole 292 at the position corresponding to the liquid inlet hole 222, and a wall 294 sandwiched between the air outlet hole 224 and the vapor passage 40 is formed in the direction towards the air outlet hole 224 at the position corresponding to the air outlet hole 224. The through hole 292 communicates with the liquid storage cavity 12 and the liquid inlet hole 222, and the wall 294 is sandwiched between the air outlet hole 224 and the vapor passage 40, so as to prevent the e-liquid in the liquid storage cavity 12 from entering the air outlet hole 224.

The bottom 40 is configured to cooperate with the base 20 to fasten the vaporization core 30 between the bottom 40 and the base 20, and a vaporization cavity 41 is formed between the bottom 40 and the vaporization core 30, and the vaporization cavity 41 communicates with the air outlet hole 224. The bottom 40 includes a bottom bottom wall 42 and a bottom side wall 44. A fastening and fitting structure for connecting to the base 20 is disposed on the bottom side wall 44, an air inlet hole 46 is disposed on the bottom bottom wall 42, and the air inlet hole 46 further communicates with the vaporization cavity 41.

The bottom 40 and the base 20 may be connected by using the fastening and fitting structure. For example, a hook may be disposed on the base 20, and a slot may be disposed on the bottom 40. Alternatively, a hook is disposed on the bottom 40, and a slot is disposed on the base 20.

The air inlet hole 46 is disposed on the bottom bottom wall 42, and the air inlet hole 46 is in fluid communication with the outside. An external air flow is sent from the air inlet hole 46 to the vaporization cavity 41 between the bottom 40 and the vaporization core 30, and further, vaporized vapor is taken away from the vaporization core 30 and is sent out of the vapor passage 14 through the air outlet hole 224.

In this embodiment, six circular air inlet holes 46 that are arranged in a shape of plum flowers are disposed on the bottom bottom wall 42. In another embodiment, at least one air inlet hole 46 is disposed on the bottom bottom wall 42. When a plurality of air inlet holes 46 are disposed on the bottom bottom wall 42, the plurality of air inlet holes 46 may be disposed in another arrangement manner, for example, in a form of an array or a star shape, which is not specifically limited herein. The shape of the air inlet hole 46 may also be any regular or irregular shape, which is not specifically limited herein.

Further, in this embodiment, the maximum size of the cross-section of each air inlet hole 46 is less than or equal to 0.2 mm. Several studies and tests have found that when the maximum size of the hole is less than or equal to 0.2 mm, the liquid cannot pass through the hole. Therefore, in this embodiment, the maximum size of the cross-section of the air inlet hole 46 is set to be less than or equal to 0.2 mm, which may further prevent an e-liquid from leaking from the air inlet hole 46, thereby affecting use.

With reference to FIG. 3 to FIG. 5 , in this embodiment, the vaporization core 30 may include a porous substrate 32 and a heating element 34 disposed on the porous substrate 32. The heating element 34 is configured to vaporize an e-liquid derived from the porous substrate 32. Specifically, the heating element 34 may be at least one of a heating coating, a heating line, a heating plate, or a heating net. The heating element 34 is electrically connected to the power supply component 200 by using an electrode 34.

The porous substrate 32 may be porous glass, porous ceramic, or the like. In this embodiment, the porous substrate 32 is porous ceramic. A porous ceramic material is usually a ceramic material sintered at a high temperature by using a component such as an aggregate, a binder, and a pore-forming agent. Inside the porous ceramic material, there are a large quantity of porous structures connected to each other and connected to a surface of the material. The porous ceramic material has high porosity, stable chemical properties, large specific surface area, small volume density, low thermal conductivity, and high temperature and corrosion resistance. It is widely used in metallurgy, biology, energy, and environmental protection.

In this embodiment, the porous ceramic material is used to make the porous substrate 32. The e-liquid on one side of the porous substrate 32 penetrates to the other side of the porous substrate 32 through a plurality of porous structures inside the porous ceramic material, which communicate with each other and the surface of the material, and contacts the heating element 34 provided on one side of the porous substrate 32, thereby vaporizing the e-liquid into vapor.

FIG. 7 is a schematic structural diagram of a first cross-sectional view of a porous substrate in the vaporizer shown in FIG. 2 . Specifically, the porous substrate 32 has a first surface 321, a second surface 322, and a side surface 324, the second surface 322 is disposed opposite to the first surface 321, and the side surface 324 is connected to the first surface 321 and the second surface 322. Generally, the first surface 321 may be configured to contact an e-liquid that communicates with the liquid storage cavity 12, and the second surface 322 may be configured to contact gas. The gas contact herein may be that the second surface 322 contacts external air, contacts air in the vaporization cavity 41, or contacts air in the vapor passage 14.

In this embodiment, the e-liquid on the side of the first surface 321 of the porous substrate 32 penetrates to the side of the second surface 322 of the porous substrate 32 through a plurality of porous structures inside the porous substrate 32 which communicate with each other and the material surface, and the heating element 34 is disposed on the second surface 322 to vaporize the e-liquid which penetrates to the second surface 322. The side surface 324 also communicates with a porous structure, so the side surface 324 may also be used for liquid guiding or ventilation.

The porous substrate 32 includes a connected liquid guide part 323 and a vent part 325. The liquid guide part 323 has a liquid absorbing surface 326 for absorbing a liquid substrate and a vaporization surface 327 on which the heating element 34 is disposed. The liquid guide part 323 is configured to conduct the liquid substrate on the side of the liquid absorbing surface 326 to the vaporization surface 327. The vent part 325 has a hydrophobic ventilation characteristic. The hydrophobic characteristic is for a liquid substrate to be vaporized herein. As long as the liquid substrate to be vaporized has the hydrophobic characteristic, it is the hydrophobic characteristic described herein. The ventilation characteristic is achieved by the fact that a large quantity of porous structures inside the porous substrate 32, which are in communication with each other, are breathable. The vent part 325 is configured to conduct gas to the liquid storage cavity 12, so as to improve a pressure condition in the liquid storage cavity 12.

Specifically, the vent part 325 includes an air inlet surface 328 and an air outlet surface 329. The air inlet surface 328 may be configured to contact with gas. The air outlet surface 329 is exposed to the liquid storage cavity 12, where being exposed to the liquid storage cavity 12 includes a case in which the air outlet surface 329 is directly a wall of the liquid storage cavity 12 or the air outlet surface 329 communicates with the liquid storage cavity 12. The gas contact herein may be that the air inlet surface 328 is in contact with external air, the air inlet surface 328 is in contact with air in the vaporization cavity 41, or the air inlet surface 328 is in contact with air in the vapor passage 14. The vent part 325 may be configured to conduct the gas on the side of the air inlet surface 328 to the air outlet surface 329, where the gas herein is mainly air, and finally the gas is conducted to the liquid storage cavity 12.

In this embodiment, the liquid guide part 323 is configured to direct the e-liquid from the first surface 321 to the second surface 322, and the vent part 325 is configured to import the gas from the second surface 322 to the first surface 321.

In this embodiment, the porous substrate 32 is an integrally formed component. A part of the porous substrate 32 is processed by using a ceramic modification technology to obtain a hydrophobic characteristic. An unmodified substrate is used as the liquid guide part 323, and a porous structure in the liquid guide part 323 is used to conduct the e-liquid, and the modified part of the substrate is used as the vent part 325, so that the vent part 325 does not perform a function of conducting the e-liquid, but performs only gas exchange.

The ceramic modification technology may be a micro-nano technology, a physical vapor deposition, an etching, an electroplating, spraying, a plasma technology, or the like. For example, the micro-nano technology is used to change the porous structure of a part of the substrate, so that the e-liquid does not enter the porous structure in the vent part 325 without affecting the ventilation characteristic of the porous structure, so that the vent part 325 has the hydrophobic ventilation characteristic. Alternatively, a hydrophobic material may be an olefin-based polymer, an amine-based polymer, an ester-based polymer, a fluororesin, a siloxane compound, a silane-based compound, a thiol-based compound, or the like, which is deposited by physical vapor deposition, electroplated, or sprayed onto a part of the porous substrate 32, and then heat-treated to form the vent part 325 having the hydrophobic ventilation characteristic.

In another embodiment, the porous substrate 32 may be a component not formed in an integrated manner, and the liquid guide part 323 and the vent part 325 may be detachably connected, for example, the vent part 325 is engaged with the liquid guide part 323 by means of clamping, inserting, or screwing. This is not specifically limited in this application.

The porous substrate 32 may be in a flat plate shape, a stepped shape, or the like, which is not specifically limited in this application. The first surface 321 is the surface of the side of the porous substrate 32 facing the liquid storage cavity 12, and the second surface 322 is the surface of the side of the porous substrate 32 facing away from the first surface 321. Both the first surface 321 and the second surface 322 may be flat planes, and the first surface 321 and the second surface 322 may be irregular planes such as curved surfaces. This is not specifically limited in this application. For example, a groove is disposed on a side of the first surface 321 of the porous substrate 32, and the surface of the groove also belongs to the first surface 321.

There is at least one vent part 325, or a plurality of vent parts 325 may be disposed on the porous substrate 32. For example, three or four equal vent parts 325 are disposed on each side along the circumferential direction of the porous substrate 32. This is not specifically limited in this application.

With reference to FIG. 3 , FIG. 4 , and FIG. 5 , in this embodiment, the first surface 321 is the surface of the side of the porous substrate 32 facing the liquid storage cavity 12, the e-liquid in the liquid storage cavity 12 passes through the through hole 292, the liquid inlet hole 222, the through hole 263, and the avoidance hole 286 to the first surface 321 of the porous substrate 32, and then the e-liquid permeates through the first surface 321 to the second surface 322. The heating element 34 disposed on the second surface 322 vaporizes the e-liquid to form vapor in the vaporization cavity 41, and the vapor flows through the side surface and the air outlet hole 224 of the guide part 22, flows out of the vapor passage 14, and is guided to the mouth of the user through the vapor passage 14. The second surface 322 is the surface of the side of the porous substrate 32 facing away from the liquid storage cavity 12, and the air inlet hole 46 on the bottom bottom wall 42 is in fluid communication with the outside, so that an external air flow is sent from the air inlet hole 46 to the vaporization cavity 41, that is, the air flow takes away vapor generated by vaporization at the second surface 322.

The e-liquid in the liquid storage cavity 12 is continuously consumed as the user smokes, and the e-liquid in the liquid storage cavity 12 is reduced, thereby reducing air pressure in the liquid storage cavity 12. If this is not improved in a timely manner, it is easy to cause poor e-liquid discharge when the e-liquid in the liquid storage cavity 12 passes through the porous substrate 32, thereby causing the heating element 34 to dry burn and generate scorched flavor due to a liquid supply failure. Because the vent part 325 exists, when the internal and external pressure difference of the liquid storage cavity 12 is excessively large, air may be introduced from one side of the second surface 322 to the first surface 321 by using the vent part 325, so as to improve a condition that the air pressure in the liquid storage cavity 12 is excessively low, so as to avoid excessively large internal and external pressure difference of the liquid storage cavity 12, thereby facilitating smooth e-liquid discharge in the liquid storage cavity 12 and avoiding scorched flavor.

For example, as shown in FIG. 7 to FIG. 9 , the vent part 325 penetrates the porous substrate 32 in the direction of pointing to the second surface 322 along the first surface 321. Therefore, because of the hydrophobic ventilation characteristic of the vent part 325, gas may be introduced from one side of the second surface 322 to one side of the first surface 321 along the porous structure in the vent part 325, thereby improving the air pressure condition in the liquid storage cavity 12 and avoiding excessively large internal and external pressure difference of the liquid storage cavity 12. The arrows in the accompanying drawings are used to indicate directions of the gas.

Specifically, in a first embodiment, referring to FIG. 7 to FIG. 9 , in the porous substrate 32, both the liquid absorbing surface 326 and the air outlet surface 329 are located on the first surface 321, and both the air inlet surface 328 and the vaporization surface 327 are located on the second surface 322. In other words, the vent part 325 has a part of the first surface 321 and a part of the second surface 322. Therefore, the part of the porous substrate 32 located between the air outlet surface 329 and the air inlet surface 328 does not undertake a function of conducting the e-liquid, but delivers, under a pressure difference, gas entering through the air inlet surface 328 to the air outlet surface 329, so as to adjust the air pressure condition in the liquid storage cavity 12. In addition, if a part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, the side surface 324 may be used as the liquid absorbing surface 326, and if the vent part 325 has a part of the side surface 324, the part of the side surface 324 may be used as the air outlet surface 329.

As shown in FIG. 7 to FIG. 9 , the vent part 325 extends from the air outlet surface 329 to the air inlet surface 328, that is, the vent part 325 runs through the porous substrate 32 in the direction in which the first surface 321 points to the second surface 322, and the vent part 325 may be configured to directly conduct the gas on one side of the second surface 322 to one side of the first surface 321, so as to improve the air pressure condition in the liquid storage cavity 12.

With reference to FIG. 5 , FIG. 7 , and FIG. 15 , FIG. 7 and FIG. 15 are respectively schematic structural diagrams of another porous substrate 32 in the vaporizer shown in FIG. 2 , and are described by replacing the porous substrate 32 in FIG. 5 with the porous substrate 32.

Specifically, the vent part 325 is located in the middle part of the porous substrate 32, and the vent part 325 is spaced from the side surface 324 of the porous substrate 32. The first surface 321 faces the liquid storage cavity 12, and the second surface 322 faces the vaporization cavity 41. Therefore, the liquid guide part 323 seals the peripheral side of the vent part 325, and the vent part 325 intakes gas from the air inlet surface 328 of the second surface 322, and conducts the gas to the air outlet surface 329 of the first surface 321, so as to introduce the gas outside the liquid storage cavity 12 into the liquid storage cavity 12, so as to adjust the air pressure condition in the liquid storage cavity 12.

With reference to FIG. 5 , FIG. 7 , and FIG. 16 , FIG. 16 is a schematic structural diagram of another top view of a porous substrate in FIG. 7 . The vent part 325 is located in the middle part of the porous substrate 32, and the vent part 325 further has a part of the side surface 324. The first surface 321 faces the liquid storage cavity 12, the second surface 322 faces the vaporization cavity 41, and the side surface 324 of the porous substrate 32 is sealed by the side wall 284 of the sealing member 28. Therefore, the vent part 325 may directly introduce the gas in the vaporization cavity 41 on the side of the second surface 322 into the liquid storage cavity 12 on the side of the first surface 321. In another embodiment, if at least a part of the side surface 324 is exposed to the gas in the vaporization cavity 41, the vent part 325 may further intake air from the side surface 324. If at least a part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, the vent part 325 may further output air from the side surface 324, and the liquid guide part 323 may further absorb liquid from the side surface 324.

With reference to FIG. 5 , FIG. 8 , and FIG. 17 , FIG. 17 is a schematic structural diagram of a top view of a porous substrate in FIG. 8 . The vent part 325 is located on the edge of the porous substrate 32, that is, the vent part 325 is located on the outside of the liquid guide part 323, and the vent part 325 further has a part of the side surface 324, and the side surface 324 is sealed by the side wall 284. Therefore, the vent part 325 may directly introduce the gas in the vaporization cavity 41 into the liquid storage cavity 12. In another embodiment, if at least a part of the side surface 324 is exposed to the gas in the vaporization cavity 41, the vent part 325 may further intake air from the side surface 324. If at least a part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, the vent part 325 may further output air from the side surface 324, and the liquid guide part 323 may further absorb liquid from the side surface 324.

With reference to FIG. 5 , FIG. 9 , and FIG. 18 , FIG. 18 is a schematic structural diagram of a top view of a porous substrate in FIG. 9 . The vent part 325 is arranged in an annular shape and surrounds the outer surface of the liquid guide part 323. In other words, the vent part 325 is arranged in an annular shape along the edge of the porous substrate 32. The vent part 325 may directly introduce the gas in the vaporization cavity 41 into the liquid storage cavity 12, so that the vent part 325 can exchange air more evenly. Because of the hydrophobic characteristic of the vent part 325, the vent part 325 may further lock the liquid in the porous substrate 32, so as to prevent the liquid in the liquid guide part 323 from leaking from the side surface 324. The side wall 284 of the sealing member 28 is sandwiched between the side surface 324 of the porous substrate 32 and the inner wall of the accommodating cavity 262, and the vent part 325 cooperates with the side wall 284 to further improve a sealing effect. In another embodiment, if a part of the side surface 324 is exposed to the gas in the vaporization cavity 41, the vent part 325 may further intake air from the side surface 324. If a part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, the vent part 325 may further output air from the side surface 324, and the liquid guide part 323 may further absorb liquid from the side surface 324.

With reference to FIG. 5 , FIG. 9 , and FIG. 19 , FIG. 19 is a schematic structural diagram of another top view of a porous substrate in FIG. 9 . A plurality of vent parts 325 are disposed at intervals along the outer surface of the liquid guide part 323, that is, a plurality of vent parts 325 are disposed around the side surface 324 of the porous substrate 32, so that a uniform air exchange effect can be implemented. In addition, a local region of the porous substrate 32 has a liquid locking effect, which further improves a local sealing effect of the porous substrate 32.

In a second embodiment, referring to FIG. 10 , both the liquid absorbing surface 326 and the air outlet surface 329 are located on the first surface 321, the air inlet surface 328 is located on the side surface 324, and the vaporization surface 327 is located on the second surface 322.

With reference to FIG. 10 and FIG. 17 , FIG. 17 is a schematic structural diagram of a top view of a porous substrate in FIG. 10 .

The air outlet surface 329 is exposed to the e-liquid in communication with the liquid storage cavity 12, and at least a part of the air inlet surface 328 is exposed to the gas in communication with the vaporization cavity 41. Therefore, the vent part 325 intakes air from the side surface 324, and may intake air from the air inlet surface 328 to output air from the air outlet surface 329 to the liquid storage cavity 12, so as to adjust the air pressure condition in the liquid storage cavity 12.

Therefore, the vent part 325 may not penetrate the porous substrate 32, so as to shorten working hours of the vent part 325 and reduce manufacturing costs. In another embodiment, if at least a part of the side surface 324 is also exposed to the e-liquid in communication with the liquid storage cavity 12, the vent part 325 may further output air from the air inlet surface 328, and the liquid guide part 323 may further absorb liquid from the side surface 324.

In a third embodiment, referring to FIG. 11 , the air outlet surface 329 is located on the side surface 324, at least a part of the air outlet surface 329 is exposed to the e-liquid in communication with the vaporization cavity 12, the air inlet surface 328 and the vaporization surface 327 are located on the second surface 322, the second surface 322 is exposed to gas, and the liquid absorbing surface 326 is located on the first surface 321 and/or the side surface 324. Under the action of a pressure difference, the vent part 325 intakes air from the air inlet surface 328 and conducts gas to the air outlet surface 329, and at least a part of the air outlet surface 329 is exposed to the e-liquid in communication with the liquid storage cavity 12, so that the vent part 325 can import gas into the liquid storage cavity 12. The vent part 325 may be disposed in an annular manner around the outer circumference of the liquid guide part 323, or at least one vent part 325 is disposed along the outer circumference of the porous substrate 32.

In a fourth embodiment, referring to FIG. 12 , both the air inlet surface 328 and the air outlet surface 329 are located on the side surface 324, the vaporization surface 327 is located on the second surface 322, and the liquid absorbing surface 326 is located on the first surface 321 and/or the side surface 324.

A part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, so that gas transmitted from the air outlet surface 329 enters the liquid storage cavity 12. A part of the side surface 324 is exposed to the vaporization cavity 41, so that gas can enter into the vent part 325 through the air inlet surface 328. The vent part 325 may be disposed in an annular manner around the outer circumference of the liquid guide part 323, or at least one vent part 325 is disposed along the outer circumference of the porous substrate 32.

In another implementation, referring to FIG. 13 , the vent part 325 is a protrusion disposed on the side surface 324, and it may also be considered that both the air inlet surface 328 and the air outlet surface 329 are located on the side surface 324, and the vent part 325 may intake air from the air inlet surface 328 facing the vaporization cavity 41, and direct gas from the air outlet surface 328 facing the liquid storage cavity 12 to the liquid storage cavity 12. The vent part 325 may be disposed on the upper edge of the side surface 324 close to the first surface 321, or the vent part 325 is disposed on the lower edge of the side surface 324 close to the second surface 322, or the vent part 325 is disposed in the middle of the side surface 324. The vent part 325 may be disposed in an annular manner along the side surface 324, or a plurality of vent parts may be disposed at intervals circumferentially along the side surface 324.

In a fifth embodiment, with reference to FIG. 14 and FIG. 15 , FIG. 15 is a schematic structural diagram of a top view of a porous substrate in FIG. 14 . Both the air inlet surface 328 and the air outlet surface 329 are located on the first surface 321, the liquid absorbing surface 326 is located on the first surface 321 and/or the side surface 324, the vent part 325 is spaced from the second surface 322, and the vaporization surface 327 is located on the second surface 322.

In this embodiment, the air inlet surface 328 is exposed to the air outlet hole 224 or the vapor passage 14 in communication with the vaporization cavity 41, the air outlet surface 329 is exposed to the e-liquid in communication with the liquid storage cavity 12, and the second surface 322 is exposed to the vaporization cavity 41.

If the first surface 321 is exposed to the e-liquid in communication with the liquid storage cavity 12, the liquid absorbing surface 326 is located on the first surface 321. If the first surface 321 and a part of the side surface 324 are exposed to the e-liquid in communication with the liquid storage cavity 12, the liquid absorbing surface 326 is located on the first surface 321 and the side surface 324. If the air outlet surface 329 is exposed to the e-liquid in communication with the liquid storage cavity 12, the remaining first surface 321 is not exposed to the e-liquid in communication with the liquid storage cavity 12, and a part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, the liquid absorbing surface 326 is located on the side surface 324.

In a sixth embodiment, referring to FIG. 20 , the porous substrate 32 is in a stepped shape, the liquid guide part 323 includes a body 3231 and a protrusion 3232 of an integrated structure, the body 3231 is provided with a groove 3233, the side of the protrusion 3232 facing away from the groove 3233 is provided with the heating element 34, and the vent part 325 is disposed on the outer surface of the body 3231 to form the outer eaves of the porous substrate 32. The porous substrate 32 includes two outer eaves disposed on two opposite sides of the body 3231. One outer eaves may be disposed by using a ceramic modification technology to form the vent part 325, or the two outer eaves are disposed by using a ceramic modification technology to form the vent part 325, or the entire circumferential outer eaves of the body 3231 may be disposed by using a ceramic modification technology to form the vent part 325.

The surface of the side of the body 3231 and the outer eaves facing the liquid storage cavity 12 side is a first surface 321, the first surface 321 further includes the surface of the groove 3233, and the surface of the side of the body 3231 and the outer eaves facing away from the first surface 321 side is a second surface 322.

In other words, the groove 3233 is disposed on the first surface 321 of the porous substrate 32, and after the e-liquid in the liquid storage cavity 12 enters the groove 3233, the contact area between the e-liquid and the porous substrate 32 can be increased, thereby increasing the diffusion speed of the e-liquid. In addition, the groove 3233 can further reduce the distance between the first surface 321 and the second surface 322 of the porous substrate 32, so as to reduce the flow resistance of the e-liquid to the second surface 322 of the porous substrate 32, and further increase the diffusion speed of the e-liquid, thereby effectively improving liquid guiding efficiency of the porous substrate 32.

Referring to FIG. 21 , in this embodiment, a magnet 210 is disposed between the power supply component 200 and the vaporizer 100, and two ends of the magnet 210 are respectively attracted to the power supply component 200 and the vaporizer 100, so as to connect the power supply component 200 and the vaporizer 100. That is, in this embodiment, the power supply component 200 and the vaporizer 100 are connected by using a magnetically attracted structure.

Further, still referring to FIG. 18 , the electronic vaporization device 300 in this embodiment further includes an air flow controller 230. The air flow controller 230 is disposed on a path connected to the outside by the air inlet hole 46, and is configured to open a gas path of the electronic vaporization device 300 under a suction force generated by suction for the electronic vaporization device 300, and close the gas path of the electronic vaporization device 300 without the suction force.

Specifically, when the air flow controller 230 detects the suction force of the electronic vaporization device 300, the air flow controller 230 opens the gas path, so that the air flow enters the vaporizer 100 from the air inlet hole 46, and the flowing air flow drives the generated vapor to flow out of the vapor passage 14 for the user to suck. When the air flow controller 230 does not detect the suction force of the electronic vaporization device 300, the air flow controller 230 closes the gas path, so as to prevent vapor from flowing out from the vapor passage 14, thereby saving the e-liquid.

Different from the prior art, this application discloses a vaporization core, a vaporizer, and an electronic vaporization device. By defining that the porous substrate of the vaporization core includes the liquid guide part and the vent part, where the vent part has a hydrophobic ventilation characteristic, so that when the liquid guide part guides the liquid in the liquid storage cavity from the liquid absorbing surface to the vaporization surface, the external gas may be guided to the liquid storage cavity by using the vent part, so as to resolve the problem that liquid discharge is not smooth because air pressure in the liquid storage cavity is too low when the vaporization core guides the liquid, thereby facilitating a return rise of the air pressure in the liquid storage cavity and enabling the liquid to be smoothly guided to the vaporization surface from the liquid absorbing surface. Therefore, the vaporization core provided in this application can supply air to the liquid storage cavity on the side of the liquid absorbing surface, thereby improving an air pressure condition of the liquid storage cavity, so as to avoid the case that liquid discharge is not smooth due to a low air pressure in the liquid storage cavity.

The foregoing descriptions are merely embodiments of this application, and the patent scope of this application is not limited thereto. All equivalent structure or process changes made according to the content of this specification and accompanying drawings in this application or by directly or indirectly applying this application in other related technical fields shall similarly fall within the patent protection scope of this application.

While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It will be understood that changes and modifications may be made by those of ordinary skill within the scope of the following claims. In particular, the present invention covers further embodiments with any combination of features from different embodiments described above and below. Additionally, statements made herein characterizing the invention refer to an embodiment of the invention and not necessarily all embodiments.

The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C. 

What is claimed is:
 1. A vaporization core applied to an electronic vaporization device, comprising: a porous substrate comprising a liquid guide part that has a liquid absorbing surface configured to absorb a liquid substrate and a vaporization surface on which a heating element is disposed, the liquid guide part being configured to conduct the liquid substrate on a side of the liquid absorbing surface to the vaporization surface; the heating element; and a vent part connected to the liquid guide part, the vent part having a hydrophobic ventilation characteristic, the vent part comprising an air inlet surface and an air outlet surface, the air inlet surface being configured to contact gas, the air outlet surface being configured to be exposed to a liquid storage cavity, and the vent part being configured to conduct gas on a side of the air inlet surface to the air outlet surface.
 2. The vaporization core of claim 1, wherein the porous substrate has a first surface and a second surface opposite the first surface, the liquid absorbing surface and the air outlet surface are both located on the first surface, and the air inlet surface and the vaporization surface are located on the second surface.
 3. The vaporization core of claim 1, wherein the vent part extends from the air outlet surface to the air inlet surface.
 4. The vaporization core of claim 1, wherein the porous substrate has a first surface, a second surface, and a side surface, the second surface being opposite the first surface, and the side surface is connected to the first surface and the second surface, and wherein both the liquid absorbing surface and the air outlet surface are located on the first surface, the air inlet surface is located on the side surface, and the vaporization surface is located on the second surface.
 5. The vaporization core of claim 1, wherein the porous substrate has a first surface, a second surface, and a side surface, the second surface is opposite the first surface, and the side surface is connected to the first surface and the second surface, and wherein the air outlet surface is located on the side surface, the air inlet surface and the vaporization surface are located on the second surface, and the liquid absorbing surface is located on the first surface and/or the side surface.
 6. The vaporization core of claim 1, wherein the porous substrate has a first surface, a second surface, and a side surface, the second surface is opposite the first surface, and the side surface is connected to the first surface and the second surface, and wherein both the air inlet surface and the air outlet surface are located on the side surface, the vaporization surface is located on the second surface, and the liquid absorbing surface is located on the first surface and/or the side surface.
 7. The vaporization core of claim 1, wherein the porous substrate has a first surface and a second surface opposite the first surface, the air inlet surface and the air outlet surface are both located on the first surface, the liquid absorbing surface is located on the first surface and/or the side surface, the vent part is spaced from the second surface, and the vaporization surface is located on the second surface.
 8. The vaporization core of claim 2, wherein the vent part is arranged in an annular shape around the outer surface of the liquid guide part, or wherein a plurality of vent parts are circumferentially spaced along the side surface of the porous substrate.
 9. The vaporization core of claim 2, wherein the porous substrate has a side surface, and two opposite sides of the side surface are respectively connected to the first surface and the second surface, and wherein the vent part is spaced from the side surface.
 10. The vaporization core of claim 1, wherein the liquid guide part comprises a body and a protrusion of an integrated structure, the body is provided with a groove, the heating element is disposed on the side of the protrusion facing away from the groove, and the vent part is disposed on an outer surface of the body.
 11. The vaporization core of claim 1, wherein the porous substrate comprises an integrally formed component.
 12. A vaporizer, comprising: the vaporization core of claim 1; and a liquid storage cavity formed in the vaporizer, wherein the liquid absorbing surface and the air outlet surface are exposed to the liquid substrate in communication with the liquid storage cavity.
 13. An electronic vaporization device, comprising: a power supply component; and the vaporizer of claim 12, wherein the power supply component is electrically connected to the vaporizer and is configured to supply power to the vaporization core of the vaporizer. 